Door-locking mechanism.



T; P. SHEAN.

DOOR LOOKING MECHANISM.

APPLICATION FILED 213.11, 1910.

Patented Dec. 27, 1910.

lizbenfi g K I fwiwsses 1 c3 .15 mm Mr. W

THbMAS P; SHEAN, OF CHICAGO, ILLINOIS.

noon-LOCKI G MECHANISM.

Specification of Letters Patent.

Patented Dec. 2'7, 1910.

Application filed February 11, 1910. Serial'No. 543.336.

{locking means for fireproof swinging doors upon the eneral construction an arrangement disc osed in my co-pendin application,-Serial Number 530,287, and t e. especial object of the improvements forming the subject matter of this application is to provide locking bars that will lock two hinged doors together and to the frame in which they are hung without the 'aid of springs, and in which the action of gravity is utilized in the locking 0 rations.

A furt er object of my improvements is to provide locking means having as few' parts as possible, and to so combine and ar-- range these that they will operate efi'eetively and easily under all the conditions affecting devices of this character.

An additional objectis to provide means whereby the door arranged to be closed in advance of the other must always be closed in that order.

Various other special objects and advan tages are obtained by my improvements as will readily. appear to those skilled in the art to which this invention relates.

In the accompanying drawing which forms a part of this application, I have shown my im rovem'ents in a preferred form in the to lowing views Figure'l. is a vertical sectional view of a portion of a hollow metal door to which my ocking mechanism is ap lied, the latter being shown in elevation; ig. 2 is a vertical cross-section of the lock-stile of the door shown in Fig. 1, with an edge-view of, the lockin arts; Fig. 3 is a vertical crosssection 0 t e lock-stile of the-companion door to the one shown in Figs. 1 and 2, and Fig. 4 is a vertical section of a portion of the com anion'doorwith its locking bars shown in e evation Referring to the details of the drawing, 5

represe ntslthe"hollow lock-stile of a swinging sheet metal 'door hereinafter called for convenience, the left-hand door and 6, 001- respondingly illustrates the lock-stile ofthe companion door, hereinafter called the righthand door. The meeting edge of the stile of the left-hand door is provided at equidistant points with openings 5*, and the corresponding edge of the right-hand door is provided with openings 6 which register with the openings 5 when the doors are closed. A knob-spindlefi" extends through the stile 5 and is provided with knobs 5 on its ends in the usual manner. Mounted on the spindle within the stile, is a circular plate 7, on which are pivoted two curved links 8 and 9, near the outer ends of which are slots which effect a limitedsliding engagement of the links with a pin 10 projecting from the adjacent side of the latchbar 11. v

The latch-bar 11 extends nearl the entire length or height of the door. t is a flatmetal bar provided along one edge with inclined tumblers or bolts 11 which areadapted to slide easily through the openings 5, the walls of the latter bein inclined to cor respond with the edges of the bolts. The latch-bar 11 is slidingly mounted in three metal straps or keepers 12 which are riveted to one side of the door stile and have slideways adapted to permit lateral as well as vertical movement to said bar. Each of the straps 12 has a slot 12 cut diagonally therein, the inclination of which corresponds to that of the bolts 11'. Slidin 1y fitted in each slot is a pin or bolt 12* whic is fixed in and projects from the bar 11.

At the upper end of the bar 11 a pin 11" is fixed so as to project outwardly toward the contiguous face of the door, and extends This pin is so positioned that when the door is closed against the door stop 19 said pin will pass through the hole 14 and strike" against the pin 11 (the bar 11 being raised) strap 19? of the lintel 1901f the door-frame.

and push the latter with the bar inwardly.

As soon as the pin H" is pushed through the hole in the door it will he l'rcc to slide in the slot I l" and gravity will causolhe liar ll to drop and thereby project the bolts through the openings 5. The deflection ol the bar It resulting from the action of the pin 15 is indicated by full lines, Fig. 2.

In the lock-stile of the right-hand door are slidingly mounted locking-laws"lfi and 16, both of which are preferably square in crosssection, but bar 15 is somewhat heavier than harlG. Bar 15 is pivolally connected with a circular late 15% on the knob spindle 17 by a short link 15*. Bar It; is directly pivoted on said plate at a point nearly diametrically opposite the pivotal connection of the link 15. The lower end of the bar 16 terminates in an outward and downward hook shaped extension 16, which occupies a position oppositethc central opening '6". The bars 1:") and 16 are vertically slidahle in keepers 17 riveted to one side of the stile, and their ends are adapted to be. proected through openof the latter a hole is provided which is ar ranged to receive, when the door is closed a pin 20 which projects from the door stop it) so that its end will strike against. the ha 1' t6 and push it: from the contiguous wall of the stile. It will he noted that the hole 6 in the. top of the. door is out of alinement with the bar 16 when the latter is in its unlocked or unprojeeted position, so that the end of said bar unless pressed by the pin 20, will lie under the portion of the top rail wall adjacent to said hole, and that when in suchposition it will be prevented from passing through said hole. So that, when the. right-halal door is free from contact with the pin 20,

. which it will always be when the door is open, and the bars 15 and 16 are retracted,

gravity cannot act to proj ct the bars, for, though the hea\ier bar.15 in its downward movement would push upward the bar'16 if the'latterwcre not held againstsuch action,

it wouldbeimpossibleiforsuch action-to 'ta kc pluco so longns the upper and of the l)tll"16 abuts against the top wall of the top rail of the door, as indicated by dotted lines, Fig; 3.

It willbe understood, that a very slightdeviation of thebaf's 11 and 16 only is required to elleet the operations above described, and this will be permitted by the nature of the material from which sail bars are made, the location of the keepers 12 and 17 respectively and the slight deflection effected by bending the bars as indicated in Figs. 2 and 3.

When the latch-bar ll is projected, its middle bolt 11" will lie iii-close proximity to the outer edge of the hook 16 as indicated l by dotted lines, Fig. 4, and it will be obvious that when in such position, the bar 16 cannot be moved, its pivotal connection with the plate 1.8 being such that when projected or in locked position, it can only be moved downwardly and its slnipc being such that when moved downwardly,the hook 16 will move outwardly or toward the bolt; 11. llcnce it will be necessary, to effect the opening of the right-hand door, that the latch on the left-hand dooluhe first, operated'to disengage it from the right-hand door. The

ot' the bar 16 is provided for by leaving the strap 17" opcn'at the side toward which such movement takesplace.

The unlatehing of the bar it, may be pre vented by a lock 13 secured within the stile a and so arranged that its bolt, when projet-ted, will impinge against, the rear or inncr edge of said bar, as indicated in Fig. 1.

It will be noted that the relative arrangement of the slotted curved links 8 and 9 and disk-plate T, is such-that. said links will lift the bar irrespective of the direction in which the knob-spindle is turned.

in opening the lefthand door the knobspindle 5 is turned, thus raising the bar 11 and freeing the bolts 11" from the openings (r in the. companion door or in whatever 'openings may-be provided therefor. As the door is swung on its hinges the pressure of the pin It)" will he released from the pin 11 so that the latter will be forced into the hole ll" in the door opposite the upper end of the slot 14, and as soon as the ln enters said hole the pin will be held therein and thus the bar [1 will be held in its inoperative POSI- tion until the left-hand door is again closed. It the lefth'and door should by inadv'er'tence be closed inadv-anceof the right-hand door, the bolts 11* would projectand thus the right-hand door would'lsbrike against; them and closing be made impossible, hence it w ll be. seen the locking mechanism is so conalways be closed and opened in the predetermined order.

I claim:

'1. n1 door-locking mechanism, the combination with a door and door-frame, of agravity acting bar mounted OILthQlOCk stile of said door to slide vrt-ically and laterally, bolts-connected with said'bar and adapted to be projected from the lock-stile of the door, means for manually lifting said bar, means slight lateral movement of the'lower portion st-rooted andarranged that the doors must tit) cooperating with said bar for automatically locking itin its raised position. and means on the door-frame for auton'iatirallv rehnis- 5 beprojeeted from the lock-stile in an oblique I direction, a knob-spindle,.means connected with the knob-spindle for lifting said bar, means for locking said bar in its raised position and means on the door-frame adapted upon .the rlo'sim of the door, to push against said 'bar, where y said bar will be released from said locking means. i

3. .In dew-docking mechanism, the combination with a door and door-frame, of a gravity-actinglatch bar mounted onthe lock stile of said door to slide obliquely, bolts connected with said bar and extending in the d rection of the movement of said bar, means for lifting said bar. means for automatically lot-king said bar in its lifted position. and means for auton'iatieally releasing said bar, operative upon the closing of the door against its frame.

4. In door-locking mechanism, the eombination with a hollow metal doonstile ha ring inclined openings in its edge, of a latch-bar 'arrangethwithin said stile. bolts connected with said bar and adapted to slide in said openings, ineaus mounted in said stile to guide said bar in an obliquedirection. and means for operating said bar.

In door-locking mechanism, the combina,tion with a door, a latch-bar mounted to slide obliquely on said door. a l(Ilt)li-S1)lil- I dle mounted transversely to said bar, a plate on said spindle, and slotted lin'ks puotallv connected with said plate and bar and adapted to lift said bar when-the spindle isturned in either direction. 1

(S. In door-locking mechanism. the combination with a door having an opening in its upper edge and a hole in its side near upper edge, a door-frame having means pin adapted to project. through said opening when the door is closed, a locking-bar slidably mounted in said door and adapted to be deflected by said pin and to extend through said opening when deflected, and means for operating said bar.

7. In door-locking mechanism, the combination with a door having an opening in its upper edge and a hole in its side near its it per edge, a door-frame having means at apted to extend through said hole when the door is closed, a locking-bar slidably mountedin said door and adapted to be deflected by said means and to extend through 1 said openingwhtm deflected. manually I able means for depressing said bar and gravity operating means for raising said bar.

n. In doordoeking mechanism, the combination with a door-frame, of two complementary doors, a latch-bar mounted on one door and adapted to engage the companion .door, a locking-bar mounted on the companion door and adapted to engage the doorframe, means on their respective doors for holding the latch-bar and the locking bar in inoperative positions, means on the latching bar and means on the door-frame for automaticall releasing both latch-bar and lOCl(lIlg--llill' from their inoperative positions when said doors are closed.

9. In door-locking mechanism, the combimentary doors, a gravity aetin latch-bar mounted on one door andadapte to enga e the companion door, means for automatical locking said latch-bar in inoperative posi tion, a gravit \-'-acting locking-bar mounted on the companion door and adapted to engage the door-frame, to be engaged by the latch bar, and to be automatically held in inoperative position, and independent means on'the door-frame for automatically releasing both latch-bar and locking-bar from their locked positions.

10. In door-Melting mechanism, a doorframe, a door having a hollow metal stile, a locking-bar slidably mounted in said stile, l said bar having a hook-extension at its'lower end and having its upper end held within said stile in inoperative position when the door open, means adapted to engage said hook extension to prevent the sliding of said bar. l'l'lOtlllS on the doordrame for deflecting the upper end of the ba r. said means operative upon the closing of the door, and gravity operated means for sliding said bar to {locking position after said upper end has been detieeted.

11. In door-locking mechanism, the combination of a door-frame, a pair of doors hinged on said frame. a latch-bar on one door held in inoperative position when the ioor is open. a locking-bar on the other door held in inoperative position when the door is open. means on the latch-bar and means on the. looking-bar adapted to cooperate when the doors are closed and the latch-bar and loekingdiai' are in operative positions where by the loeltingbar cannot be moved to its been moved to its unlatched position, and independent means on the frame for releasing said latch-bar and locking-bar from inoperative positions when said doors are closed.

nation with a door-frame, of two c0mple-.

unlocked position until the latch-bar has 12. In door-locking mechanism, in combioperbar for preventing the operation of the lock- "nation with a hgllow metal door stile having openings in ltS meeting edge, a gravity iltt-lllg latch-[m1- arranged within said stile and having inclined bolts rigidly connected therewith and extending through the openings in said stile, means for gui ing and supporting said bar within the stile, means for a:-.\n:lll npeiating Said bar, and means for receiving said bolts when in projected position.

In testimony whet-coil afiix my signature in the presence of two witnesses.

' THOMAS P. SHEAN.

Witnesses T. M( POYNTON,

M. A. Minoan. 

